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The kame terrace on the right was
deposited on the eastern side of
Nellie Juan lagoon during retreat of
the ice. This landform developed
when the glacier filled the right side
of this view and gravel and sand
carried by meltwater accumulated
between the ice and the
mountainside (left side of view). The
person is sitting at the point where
the ice surface met the terrace
surface.…read more

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Kame Deltas
A kame is formed when meltwater falls into crevasses on the ice surface and
deposits its load of sediment.
A kame delta is a glacial landform formed as a stream flows through glacial ice
and deposits material upon entering a lake at the end of the glacier, so it's in
front of it, a proglacial lake. The landform may often be observed after the
glacier has melted and usually has a delta.
They're flat-topped, steep-sided hills of well-sorted sand and gravel deposited
by a meltwater stream flowing into an ice marginal lake or sea. When the
glacier melts, streams carry sediment to glacial lakes, building kame deltas on
top of the ice. Kame deltas are formed when sub-glacial streams emerge into
ice-contact lakes.…read more

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Ice-contact delta, Tree River, Nunavut Nellie Juan Glacier
The flat-topped curving feature is a gravelly delta that formed where meltwater,
in the front of a receding glacier, deposited sediment in a sea that was about 160
m higher than present, about 9600 years ago. The melting ice front once filled
the depression encircled by the arcing delta ridge.…read more

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Kettle holes
A kettle (kettle hole) is a shallow, sediment-filled body of water formed by
retreating glaciers or draining floodwaters
Kettle holes are blocks of ice that are left behind as the glacier retreats. They are
partially buried by fluvoglacial deposits (kames) and they leave enclosed
depressions when the ice melts . The depressions often fill with water (kettle hole
lakes) and help to create distinctive kame and kettle topography.…read more

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Eskers are sinuous ridges that mark the course of streams that once transported
subglacial meltwater beneath the glacier. They are composed of sorted coarse sands
and gravel that filled the ice-restricted channels and were revealed when the ice
retreated.
Formation
Sharp-Crested Eskers ­ Debris is deposited
along the sides of the channel where the flow
velocity is the lowest. Preferential melting of
the crest of the channel carves out the top.
Multiple-Crested Esker ­ When the
topography of the bedrock influences the
location of the esker, the channel may migrate
downslope. Debris is deposited as the esker
moves and two or more crests are formed on
the esker.…read more

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Comments

Anna

This was a great revision aid, it has great descriptions probs better than the AQA revision guide for explanation of fluvioglacial landforms

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